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Publisher: London Longmans, Green Publication date: 1916 Subjects: Geometry, Non-Euclidean Trigonometry Notes: This is an OCR reprint. There may be numerous typos or missing text. There are no illustrations or indexes. When you buy the General Books edition of this book you get free trial access to Million-Books.com where you can select from more than a million books for free. You can also preview the book there.